third_party/lua/src/luaconf.h - platform/external/skqp - Gitiles

 /*
 ** $Id: luaconf.h,v 1.176 2013/03/16 21:10:18 roberto Exp $
 ** Configuration file for Lua
 ** See Copyright Notice in lua.h
 */


 #ifndef lconfig_h
 #define lconfig_h

 #include <limits.h>
 #include <stddef.h>


 /*
 ** ==================================================================
 ** Search for "@@" to find all configurable definitions.
 ** ===================================================================
 */


 /*
 @@ LUA_ANSI controls the use of non-ansi features.
 ** CHANGE it (define it) if you want Lua to avoid the use of any
 ** non-ansi feature or library.
 */
 #if !defined(LUA_ANSI) && defined(__STRICT_ANSI__)
 #define LUA_ANSI
 #endif


 #if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE)
 #define LUA_WIN		/* enable goodies for regular Windows platforms */
 #endif

 #if defined(LUA_WIN)
 #define LUA_DL_DLL
 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
 #endif


 #if defined(LUA_USE_LINUX)
 #define LUA_USE_POSIX
 #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
 #define LUA_USE_READLINE	/* needs some extra libraries */
 #define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
 #define LUA_USE_LONGLONG	/* assume support for long long */
 #endif

 #if defined(LUA_USE_MACOSX)
 #define LUA_USE_POSIX
 #define LUA_USE_DLOPEN		/* does not need -ldl */
 #define LUA_USE_READLINE	/* needs an extra library: -lreadline */
 #define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
 #define LUA_USE_LONGLONG	/* assume support for long long */
 #endif


 /*
 @@ LUA_USE_POSIX includes all functionality listed as X/Open System
 @* Interfaces Extension (XSI).
 ** CHANGE it (define it) if your system is XSI compatible.
 */
 #if defined(LUA_USE_POSIX)
 #define LUA_USE_MKSTEMP
 #define LUA_USE_ISATTY
 #define LUA_USE_POPEN
 #define LUA_USE_ULONGJMP
 #define LUA_USE_GMTIME_R
 #endif


 /*
 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
 @* Lua libraries.
 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
 @* C libraries.
 ** CHANGE them if your machine has a non-conventional directory
 ** hierarchy or if you want to install your libraries in
 ** non-conventional directories.
 */
 #if defined(_WIN32)	/* { */
 /*
 ** In Windows, any exclamation mark ('!') in the path is replaced by the
 ** path of the directory of the executable file of the current process.
 */
 #define LUA_LDIR	"!\\lua\\"
 #define LUA_CDIR	"!\\"
 #define LUA_PATH_DEFAULT  \
 		LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
 		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" ".\\?.lua"
 #define LUA_CPATH_DEFAULT \
 		LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll"

 #else			/* }{ */

 #define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/"
 #define LUA_ROOT	"/usr/local/"
 #define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR
 #define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR
 #define LUA_PATH_DEFAULT  \
 		LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
 		LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" "./?.lua"
 #define LUA_CPATH_DEFAULT \
 		LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
 #endif			/* } */


 /*
 @@ LUA_DIRSEP is the directory separator (for submodules).
 ** CHANGE it if your machine does not use "/" as the directory separator
 ** and is not Windows. (On Windows Lua automatically uses "\".)
 */
 #if defined(_WIN32)
 #define LUA_DIRSEP	"\\"
 #else
 #define LUA_DIRSEP	"/"
 #endif


 /*
 @@ LUA_ENV is the name of the variable that holds the current
 @@ environment, used to access global names.
 ** CHANGE it if you do not like this name.
 */
 #define LUA_ENV		"_ENV"


 /*
 @@ LUA_API is a mark for all core API functions.
 @@ LUALIB_API is a mark for all auxiliary library functions.
 @@ LUAMOD_API is a mark for all standard library opening functions.
 ** CHANGE them if you need to define those functions in some special way.
 ** For instance, if you want to create one Windows DLL with the core and
 ** the libraries, you may want to use the following definition (define
 ** LUA_BUILD_AS_DLL to get it).
 */
 #if defined(LUA_BUILD_AS_DLL)	/* { */

 #if defined(LUA_CORE) || defined(LUA_LIB)	/* { */
 #define LUA_API __declspec(dllexport)
 #else						/* }{ */
 #define LUA_API __declspec(dllimport)
 #endif						/* } */

 #else				/* }{ */

 #define LUA_API		extern

 #endif				/* } */


 /* more often than not the libs go together with the core */
 #define LUALIB_API	LUA_API
 #define LUAMOD_API	LUALIB_API


 /*
 @@ LUAI_FUNC is a mark for all extern functions that are not to be
 @* exported to outside modules.
 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
 @* that are not to be exported to outside modules (LUAI_DDEF for
 @* definitions and LUAI_DDEC for declarations).
 ** CHANGE them if you need to mark them in some special way. Elf/gcc
 ** (versions 3.2 and later) mark them as "hidden" to optimize access
 ** when Lua is compiled as a shared library. Not all elf targets support
 ** this attribute. Unfortunately, gcc does not offer a way to check
 ** whether the target offers that support, and those without support
 ** give a warning about it. To avoid these warnings, change to the
 ** default definition.
 */
 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
     defined(__ELF__)		/* { */
 #define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
 #define LUAI_DDEC	LUAI_FUNC
 #define LUAI_DDEF	/* empty */

 #else				/* }{ */
 #define LUAI_FUNC	extern
 #define LUAI_DDEC	extern
 #define LUAI_DDEF	/* empty */
 #endif				/* } */


 /*
 @@ LUA_QL describes how error messages quote program elements.
 ** CHANGE it if you want a different appearance.
 */
 #define LUA_QL(x)	"'" x "'"
 #define LUA_QS		LUA_QL("%s")


 /*
 @@ LUA_IDSIZE gives the maximum size for the description of the source
 @* of a function in debug information.
 ** CHANGE it if you want a different size.
 */
 #define LUA_IDSIZE	60


 /*
 @@ luai_writestring/luai_writeline define how 'print' prints its results.
 ** They are only used in libraries and the stand-alone program. (The #if
 ** avoids including 'stdio.h' everywhere.)
 */
 #if defined(LUA_LIB) || defined(lua_c)
 #include <stdio.h>
 #define luai_writestring(s,l)	fwrite((s), sizeof(char), (l), stdout)
 #define luai_writeline()	(luai_writestring("\n", 1), fflush(stdout))
 #endif

 /*
 @@ luai_writestringerror defines how to print error messages.
 ** (A format string with one argument is enough for Lua...)
 */
 #define luai_writestringerror(s,p) \
 	(fprintf(stderr, (s), (p)), fflush(stderr))


 /*
 @@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is,
 ** strings that are internalized. (Cannot be smaller than reserved words
 ** or tags for metamethods, as these strings must be internalized;
 ** #("function") = 8, #("__newindex") = 10.)
 */
 #define LUAI_MAXSHORTLEN        40


 /*
 ** {==================================================================
 ** Compatibility with previous versions
 ** ===================================================================
 */

 /*
 @@ LUA_COMPAT_ALL controls all compatibility options.
 ** You can define it to get all options, or change specific options
 ** to fit your specific needs.
 */
 #if defined(LUA_COMPAT_ALL)	/* { */

 /*
 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
 ** You can replace it with 'table.unpack'.
 */
 #define LUA_COMPAT_UNPACK

 /*
 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
 ** You can replace it with 'package.searchers'.
 */
 #define LUA_COMPAT_LOADERS

 /*
 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
 ** You can call your C function directly (with light C functions).
 */
 #define lua_cpcall(L,f,u)  \
 	(lua_pushcfunction(L, (f)), \
 	 lua_pushlightuserdata(L,(u)), \
 	 lua_pcall(L,1,0,0))


 /*
 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
 ** You can rewrite 'log10(x)' as 'log(x, 10)'.
 */
 #define LUA_COMPAT_LOG10

 /*
 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
 ** library. You can rewrite 'loadstring(s)' as 'load(s)'.
 */
 #define LUA_COMPAT_LOADSTRING

 /*
 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
 */
 #define LUA_COMPAT_MAXN

 /*
 @@ The following macros supply trivial compatibility for some
 ** changes in the API. The macros themselves document how to
 ** change your code to avoid using them.
 */
 #define lua_strlen(L,i)		lua_rawlen(L, (i))

 #define lua_objlen(L,i)		lua_rawlen(L, (i))

 #define lua_equal(L,idx1,idx2)		lua_compare(L,(idx1),(idx2),LUA_OPEQ)
 #define lua_lessthan(L,idx1,idx2)	lua_compare(L,(idx1),(idx2),LUA_OPLT)

 /*
 @@ LUA_COMPAT_MODULE controls compatibility with previous
 ** module functions 'module' (Lua) and 'luaL_register' (C).
 */
 #define LUA_COMPAT_MODULE

 #endif				/* } */

 /* }================================================================== */


 /*
 @@ LUAI_BITSINT defines the number of bits in an int.
 ** CHANGE here if Lua cannot automatically detect the number of bits of
 ** your machine. Probably you do not need to change this.
 */
 /* avoid overflows in comparison */
 #if INT_MAX-20 < 32760		/* { */
 #define LUAI_BITSINT	16
 #elif INT_MAX > 2147483640L	/* }{ */
 /* int has at least 32 bits */
 #define LUAI_BITSINT	32
 #else				/* }{ */
 #error "you must define LUA_BITSINT with number of bits in an integer"
 #endif				/* } */


 /*
 @@ LUA_INT32 is an signed integer with exactly 32 bits.
 @@ LUAI_UMEM is an unsigned integer big enough to count the total
 @* memory used by Lua.
 @@ LUAI_MEM is a signed integer big enough to count the total memory
 @* used by Lua.
 ** CHANGE here if for some weird reason the default definitions are not
 ** good enough for your machine. Probably you do not need to change
 ** this.
 */
 #if LUAI_BITSINT >= 32		/* { */
 #define LUA_INT32	int
 #define LUAI_UMEM	size_t
 #define LUAI_MEM	ptrdiff_t
 #else				/* }{ */
 /* 16-bit ints */
 #define LUA_INT32	long
 #define LUAI_UMEM	unsigned long
 #define LUAI_MEM	long
 #endif				/* } */


 /*
 @@ LUAI_MAXSTACK limits the size of the Lua stack.
 ** CHANGE it if you need a different limit. This limit is arbitrary;
 ** its only purpose is to stop Lua to consume unlimited stack
 ** space (and to reserve some numbers for pseudo-indices).
 */
 #if LUAI_BITSINT >= 32
 #define LUAI_MAXSTACK		1000000
 #else
 #define LUAI_MAXSTACK		15000
 #endif

 /* reserve some space for error handling */
 #define LUAI_FIRSTPSEUDOIDX	(-LUAI_MAXSTACK - 1000)


 /*
 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
 ** CHANGE it if it uses too much C-stack space.
 */
 #define LUAL_BUFFERSIZE		BUFSIZ


 /*
 ** {==================================================================
 @@ LUA_NUMBER is the type of numbers in Lua.
 ** CHANGE the following definitions only if you want to build Lua
 ** with a number type different from double. You may also need to
 ** change lua_number2int & lua_number2integer.
 ** ===================================================================
 */

 #define LUA_NUMBER_DOUBLE
 #define LUA_NUMBER	double

 /*
 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
 @* over a number.
 */
 #define LUAI_UACNUMBER	double


 /*
 @@ LUA_NUMBER_SCAN is the format for reading numbers.
 @@ LUA_NUMBER_FMT is the format for writing numbers.
 @@ lua_number2str converts a number to a string.
 @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
 */
 #define LUA_NUMBER_SCAN		"%lf"
 #define LUA_NUMBER_FMT		"%.14g"
 #define lua_number2str(s,n)	sprintf((s), LUA_NUMBER_FMT, (n))
 #define LUAI_MAXNUMBER2STR	32 /* 16 digits, sign, point, and \0 */


 /*
 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations
 */
 #define l_mathop(x)		(x)


 /*
 @@ lua_str2number converts a decimal numeric string to a number.
 @@ lua_strx2number converts an hexadecimal numeric string to a number.
 ** In C99, 'strtod' does both conversions. C89, however, has no function
 ** to convert floating hexadecimal strings to numbers. For these
 ** systems, you can leave 'lua_strx2number' undefined and Lua will
 ** provide its own implementation.
 */
 #define lua_str2number(s,p)	strtod((s), (p))

 #if defined(LUA_USE_STRTODHEX)
 #define lua_strx2number(s,p)	strtod((s), (p))
 #endif


 /*
 @@ The luai_num* macros define the primitive operations over numbers.
 */

 /* the following operations need the math library */
 #if defined(lobject_c) || defined(lvm_c)
 #include <math.h>
 #define luai_nummod(L,a,b)	((a) - l_mathop(floor)((a)/(b))*(b))
 #define luai_numpow(L,a,b)	(l_mathop(pow)(a,b))
 #endif

 /* these are quite standard operations */
 #if defined(LUA_CORE)
 #define luai_numadd(L,a,b)	((a)+(b))
 #define luai_numsub(L,a,b)	((a)-(b))
 #define luai_nummul(L,a,b)	((a)*(b))
 #define luai_numdiv(L,a,b)	((a)/(b))
 #define luai_numunm(L,a)	(-(a))
 #define luai_numeq(a,b)		((a)==(b))
 #define luai_numlt(L,a,b)	((a)<(b))
 #define luai_numle(L,a,b)	((a)<=(b))
 #define luai_numisnan(L,a)	(!luai_numeq((a), (a)))
 #endif


 /*
 @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
 ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
 ** machines, ptrdiff_t gives a good choice between int or long.)
 */
 #define LUA_INTEGER	ptrdiff_t

 /*
 @@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned.
 ** It must have at least 32 bits.
 */
 #define LUA_UNSIGNED	unsigned LUA_INT32


 /*
 ** Some tricks with doubles
 */

 #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI)	/* { */
 /*
 ** The next definitions activate some tricks to speed up the
 ** conversion from doubles to integer types, mainly to LUA_UNSIGNED.
 **
 @@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a
 ** DirectX idiosyncrasy.
 **
 @@ LUA_IEEE754TRICK uses a trick that should work on any machine
 ** using IEEE754 with a 32-bit integer type.
 **
 @@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be
 ** defined when LUA_INTEGER is a 32-bit integer.
 **
 @@ LUA_IEEEENDIAN is the endianness of doubles in your machine
 ** (0 for little endian, 1 for big endian); if not defined, Lua will
 ** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK).
 **
 @@ LUA_NANTRICK controls the use of a trick to pack all types into
 ** a single double value, using NaN values to represent non-number
 ** values. The trick only works on 32-bit machines (ints and pointers
 ** are 32-bit values) with numbers represented as IEEE 754-2008 doubles
 ** with conventional endianess (12345678 or 87654321), in CPUs that do
 ** not produce signaling NaN values (all NaNs are quiet).
 */

 /* Microsoft compiler on a Pentium (32 bit) ? */
 #if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86)	/* { */

 #define LUA_MSASMTRICK
 #define LUA_IEEEENDIAN		0
 #define LUA_NANTRICK


 /* pentium 32 bits? */
 #elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */

 #define LUA_IEEE754TRICK
 #define LUA_IEEELL
 #define LUA_IEEEENDIAN		0
 #define LUA_NANTRICK

 /* pentium 64 bits? */
 #elif defined(__x86_64)						/* }{ */

 #define LUA_IEEE754TRICK
 #define LUA_IEEEENDIAN		0

 #elif defined(__POWERPC__) || defined(__ppc__)			/* }{ */

 #define LUA_IEEE754TRICK
 #define LUA_IEEEENDIAN		1

 #else								/* }{ */

 /* assume IEEE754 and a 32-bit integer type */
 #define LUA_IEEE754TRICK

 #endif								/* } */

 #endif							/* } */

 /* }================================================================== */


 /* =================================================================== */

 /*
 ** Local configuration. You can use this space to add your redefinitions
 ** without modifying the main part of the file.
 */


 #endif
	/*
	** $Id: luaconf.h,v 1.176 2013/03/16 21:10:18 roberto Exp $
	** Configuration file for Lua
	** See Copyright Notice in lua.h
	*/


	#ifndef lconfig_h
	#define lconfig_h

	#include <limits.h>
	#include <stddef.h>


	/*
	** ==================================================================
	** Search for "@@" to find all configurable definitions.
	** ===================================================================
	*/


	/*
	@@ LUA_ANSI controls the use of non-ansi features.
	** CHANGE it (define it) if you want Lua to avoid the use of any
	** non-ansi feature or library.
	*/
	#if !defined(LUA_ANSI) && defined(__STRICT_ANSI__)
	#define LUA_ANSI
	#endif


	#if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE)
	#define LUA_WIN /* enable goodies for regular Windows platforms */
	#endif

	#if defined(LUA_WIN)
	#define LUA_DL_DLL
	#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */
	#endif



	#if defined(LUA_USE_LINUX)
	#define LUA_USE_POSIX
	#define LUA_USE_DLOPEN /* needs an extra library: -ldl */
	#define LUA_USE_READLINE /* needs some extra libraries */
	#define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */
	#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */
	#define LUA_USE_LONGLONG /* assume support for long long */
	#endif

	#if defined(LUA_USE_MACOSX)
	#define LUA_USE_POSIX
	#define LUA_USE_DLOPEN /* does not need -ldl */
	#define LUA_USE_READLINE /* needs an extra library: -lreadline */
	#define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */
	#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */
	#define LUA_USE_LONGLONG /* assume support for long long */
	#endif



	/*
	@@ LUA_USE_POSIX includes all functionality listed as X/Open System
	@* Interfaces Extension (XSI).
	** CHANGE it (define it) if your system is XSI compatible.
	*/
	#if defined(LUA_USE_POSIX)
	#define LUA_USE_MKSTEMP
	#define LUA_USE_ISATTY
	#define LUA_USE_POPEN
	#define LUA_USE_ULONGJMP
	#define LUA_USE_GMTIME_R
	#endif



	/*
	@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
	@* Lua libraries.
	@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
	@* C libraries.
	** CHANGE them if your machine has a non-conventional directory
	** hierarchy or if you want to install your libraries in
	** non-conventional directories.
	*/
	#if defined(_WIN32) /* { */
	/*
	** In Windows, any exclamation mark ('!') in the path is replaced by the
	** path of the directory of the executable file of the current process.
	*/
	#define LUA_LDIR "!\\lua\\"
	#define LUA_CDIR "!\\"
	#define LUA_PATH_DEFAULT \
	LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
	LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" ".\\?.lua"
	#define LUA_CPATH_DEFAULT \
	LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll"

	#else /* }{ */

	#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/"
	#define LUA_ROOT "/usr/local/"
	#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR
	#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR
	#define LUA_PATH_DEFAULT \
	LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
	LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" "./?.lua"
	#define LUA_CPATH_DEFAULT \
	LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
	#endif /* } */


	/*
	@@ LUA_DIRSEP is the directory separator (for submodules).
	** CHANGE it if your machine does not use "/" as the directory separator
	** and is not Windows. (On Windows Lua automatically uses "\".)
	*/
	#if defined(_WIN32)
	#define LUA_DIRSEP "\\"
	#else
	#define LUA_DIRSEP "/"
	#endif


	/*
	@@ LUA_ENV is the name of the variable that holds the current
	@@ environment, used to access global names.
	** CHANGE it if you do not like this name.
	*/
	#define LUA_ENV "_ENV"


	/*
	@@ LUA_API is a mark for all core API functions.
	@@ LUALIB_API is a mark for all auxiliary library functions.
	@@ LUAMOD_API is a mark for all standard library opening functions.
	** CHANGE them if you need to define those functions in some special way.
	** For instance, if you want to create one Windows DLL with the core and
	** the libraries, you may want to use the following definition (define
	** LUA_BUILD_AS_DLL to get it).
	*/
	#if defined(LUA_BUILD_AS_DLL) /* { */

	#if defined(LUA_CORE) \|\| defined(LUA_LIB) /* { */
	#define LUA_API __declspec(dllexport)
	#else /* }{ */
	#define LUA_API __declspec(dllimport)
	#endif /* } */

	#else /* }{ */

	#define LUA_API extern

	#endif /* } */


	/* more often than not the libs go together with the core */
	#define LUALIB_API LUA_API
	#define LUAMOD_API LUALIB_API


	/*
	@@ LUAI_FUNC is a mark for all extern functions that are not to be
	@* exported to outside modules.
	@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
	@* that are not to be exported to outside modules (LUAI_DDEF for
	@* definitions and LUAI_DDEC for declarations).
	** CHANGE them if you need to mark them in some special way. Elf/gcc
	** (versions 3.2 and later) mark them as "hidden" to optimize access
	** when Lua is compiled as a shared library. Not all elf targets support
	** this attribute. Unfortunately, gcc does not offer a way to check
	** whether the target offers that support, and those without support
	** give a warning about it. To avoid these warnings, change to the
	** default definition.
	*/
	#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
	defined(__ELF__) /* { */
	#define LUAI_FUNC __attribute__((visibility("hidden"))) extern
	#define LUAI_DDEC LUAI_FUNC
	#define LUAI_DDEF /* empty */

	#else /* }{ */
	#define LUAI_FUNC extern
	#define LUAI_DDEC extern
	#define LUAI_DDEF /* empty */
	#endif /* } */



	/*
	@@ LUA_QL describes how error messages quote program elements.
	** CHANGE it if you want a different appearance.
	*/
	#define LUA_QL(x) "'" x "'"
	#define LUA_QS LUA_QL("%s")


	/*
	@@ LUA_IDSIZE gives the maximum size for the description of the source
	@* of a function in debug information.
	** CHANGE it if you want a different size.
	*/
	#define LUA_IDSIZE 60


	/*
	@@ luai_writestring/luai_writeline define how 'print' prints its results.
	** They are only used in libraries and the stand-alone program. (The #if
	** avoids including 'stdio.h' everywhere.)
	*/
	#if defined(LUA_LIB) \|\| defined(lua_c)
	#include <stdio.h>
	#define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout)
	#define luai_writeline() (luai_writestring("\n", 1), fflush(stdout))
	#endif

	/*
	@@ luai_writestringerror defines how to print error messages.
	** (A format string with one argument is enough for Lua...)
	*/
	#define luai_writestringerror(s,p) \
	(fprintf(stderr, (s), (p)), fflush(stderr))


	/*
	@@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is,
	** strings that are internalized. (Cannot be smaller than reserved words
	** or tags for metamethods, as these strings must be internalized;
	** #("function") = 8, #("__newindex") = 10.)
	*/
	#define LUAI_MAXSHORTLEN 40



	/*
	** {==================================================================
	** Compatibility with previous versions
	** ===================================================================
	*/

	/*
	@@ LUA_COMPAT_ALL controls all compatibility options.
	** You can define it to get all options, or change specific options
	** to fit your specific needs.
	*/
	#if defined(LUA_COMPAT_ALL) /* { */

	/*
	@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
	** You can replace it with 'table.unpack'.
	*/
	#define LUA_COMPAT_UNPACK

	/*
	@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
	** You can replace it with 'package.searchers'.
	*/
	#define LUA_COMPAT_LOADERS

	/*
	@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
	** You can call your C function directly (with light C functions).
	*/
	#define lua_cpcall(L,f,u) \
	(lua_pushcfunction(L, (f)), \
	lua_pushlightuserdata(L,(u)), \
	lua_pcall(L,1,0,0))


	/*
	@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
	** You can rewrite 'log10(x)' as 'log(x, 10)'.
	*/
	#define LUA_COMPAT_LOG10

	/*
	@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
	** library. You can rewrite 'loadstring(s)' as 'load(s)'.
	*/
	#define LUA_COMPAT_LOADSTRING

	/*
	@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
	*/
	#define LUA_COMPAT_MAXN

	/*
	@@ The following macros supply trivial compatibility for some
	** changes in the API. The macros themselves document how to
	** change your code to avoid using them.
	*/
	#define lua_strlen(L,i) lua_rawlen(L, (i))

	#define lua_objlen(L,i) lua_rawlen(L, (i))

	#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
	#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT)

	/*
	@@ LUA_COMPAT_MODULE controls compatibility with previous
	** module functions 'module' (Lua) and 'luaL_register' (C).
	*/
	#define LUA_COMPAT_MODULE

	#endif /* } */

	/* }================================================================== */



	/*
	@@ LUAI_BITSINT defines the number of bits in an int.
	** CHANGE here if Lua cannot automatically detect the number of bits of
	** your machine. Probably you do not need to change this.
	*/
	/* avoid overflows in comparison */
	#if INT_MAX-20 < 32760 /* { */
	#define LUAI_BITSINT 16
	#elif INT_MAX > 2147483640L /* }{ */
	/* int has at least 32 bits */
	#define LUAI_BITSINT 32
	#else /* }{ */
	#error "you must define LUA_BITSINT with number of bits in an integer"
	#endif /* } */


	/*
	@@ LUA_INT32 is an signed integer with exactly 32 bits.
	@@ LUAI_UMEM is an unsigned integer big enough to count the total
	@* memory used by Lua.
	@@ LUAI_MEM is a signed integer big enough to count the total memory
	@* used by Lua.
	** CHANGE here if for some weird reason the default definitions are not
	** good enough for your machine. Probably you do not need to change
	** this.
	*/
	#if LUAI_BITSINT >= 32 /* { */
	#define LUA_INT32 int
	#define LUAI_UMEM size_t
	#define LUAI_MEM ptrdiff_t
	#else /* }{ */
	/* 16-bit ints */
	#define LUA_INT32 long
	#define LUAI_UMEM unsigned long
	#define LUAI_MEM long
	#endif /* } */


	/*
	@@ LUAI_MAXSTACK limits the size of the Lua stack.
	** CHANGE it if you need a different limit. This limit is arbitrary;
	** its only purpose is to stop Lua to consume unlimited stack
	** space (and to reserve some numbers for pseudo-indices).
	*/
	#if LUAI_BITSINT >= 32
	#define LUAI_MAXSTACK 1000000
	#else
	#define LUAI_MAXSTACK 15000
	#endif

	/* reserve some space for error handling */
	#define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000)




	/*
	@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
	** CHANGE it if it uses too much C-stack space.
	*/
	#define LUAL_BUFFERSIZE BUFSIZ




	/*
	** {==================================================================
	@@ LUA_NUMBER is the type of numbers in Lua.
	** CHANGE the following definitions only if you want to build Lua
	** with a number type different from double. You may also need to
	** change lua_number2int & lua_number2integer.
	** ===================================================================
	*/

	#define LUA_NUMBER_DOUBLE
	#define LUA_NUMBER double

	/*
	@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
	@* over a number.
	*/
	#define LUAI_UACNUMBER double


	/*
	@@ LUA_NUMBER_SCAN is the format for reading numbers.
	@@ LUA_NUMBER_FMT is the format for writing numbers.
	@@ lua_number2str converts a number to a string.
	@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
	*/
	#define LUA_NUMBER_SCAN "%lf"
	#define LUA_NUMBER_FMT "%.14g"
	#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
	#define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */


	/*
	@@ l_mathop allows the addition of an 'l' or 'f' to all math operations
	*/
	#define l_mathop(x) (x)


	/*
	@@ lua_str2number converts a decimal numeric string to a number.
	@@ lua_strx2number converts an hexadecimal numeric string to a number.
	** In C99, 'strtod' does both conversions. C89, however, has no function
	** to convert floating hexadecimal strings to numbers. For these
	** systems, you can leave 'lua_strx2number' undefined and Lua will
	** provide its own implementation.
	*/
	#define lua_str2number(s,p) strtod((s), (p))

	#if defined(LUA_USE_STRTODHEX)
	#define lua_strx2number(s,p) strtod((s), (p))
	#endif


	/*
	@@ The luai_num* macros define the primitive operations over numbers.
	*/

	/* the following operations need the math library */
	#if defined(lobject_c) \|\| defined(lvm_c)
	#include <math.h>
	#define luai_nummod(L,a,b) ((a) - l_mathop(floor)((a)/(b))*(b))
	#define luai_numpow(L,a,b) (l_mathop(pow)(a,b))
	#endif

	/* these are quite standard operations */
	#if defined(LUA_CORE)
	#define luai_numadd(L,a,b) ((a)+(b))
	#define luai_numsub(L,a,b) ((a)-(b))
	#define luai_nummul(L,a,b) ((a)*(b))
	#define luai_numdiv(L,a,b) ((a)/(b))
	#define luai_numunm(L,a) (-(a))
	#define luai_numeq(a,b) ((a)==(b))
	#define luai_numlt(L,a,b) ((a)<(b))
	#define luai_numle(L,a,b) ((a)<=(b))
	#define luai_numisnan(L,a) (!luai_numeq((a), (a)))
	#endif



	/*
	@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
	** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
	** machines, ptrdiff_t gives a good choice between int or long.)
	*/
	#define LUA_INTEGER ptrdiff_t

	/*
	@@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned.
	** It must have at least 32 bits.
	*/
	#define LUA_UNSIGNED unsigned LUA_INT32



	/*
	** Some tricks with doubles
	*/

	#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) /* { */
	/*
	** The next definitions activate some tricks to speed up the
	** conversion from doubles to integer types, mainly to LUA_UNSIGNED.
	**
	@@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a
	** DirectX idiosyncrasy.
	**
	@@ LUA_IEEE754TRICK uses a trick that should work on any machine
	** using IEEE754 with a 32-bit integer type.
	**
	@@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be
	** defined when LUA_INTEGER is a 32-bit integer.
	**
	@@ LUA_IEEEENDIAN is the endianness of doubles in your machine
	** (0 for little endian, 1 for big endian); if not defined, Lua will
	** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK).
	**
	@@ LUA_NANTRICK controls the use of a trick to pack all types into
	** a single double value, using NaN values to represent non-number
	** values. The trick only works on 32-bit machines (ints and pointers
	** are 32-bit values) with numbers represented as IEEE 754-2008 doubles
	** with conventional endianess (12345678 or 87654321), in CPUs that do
	** not produce signaling NaN values (all NaNs are quiet).
	*/

	/* Microsoft compiler on a Pentium (32 bit) ? */
	#if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86) /* { */

	#define LUA_MSASMTRICK
	#define LUA_IEEEENDIAN 0
	#define LUA_NANTRICK


	/* pentium 32 bits? */
	#elif defined(__i386__) \|\| defined(__i386) \|\| defined(__X86__) /* }{ */

	#define LUA_IEEE754TRICK
	#define LUA_IEEELL
	#define LUA_IEEEENDIAN 0
	#define LUA_NANTRICK

	/* pentium 64 bits? */
	#elif defined(__x86_64) /* }{ */

	#define LUA_IEEE754TRICK
	#define LUA_IEEEENDIAN 0

	#elif defined(__POWERPC__) \|\| defined(__ppc__) /* }{ */

	#define LUA_IEEE754TRICK
	#define LUA_IEEEENDIAN 1

	#else /* }{ */

	/* assume IEEE754 and a 32-bit integer type */
	#define LUA_IEEE754TRICK

	#endif /* } */

	#endif /* } */

	/* }================================================================== */




	/* =================================================================== */

	/*
	** Local configuration. You can use this space to add your redefinitions
	** without modifying the main part of the file.
	*/



	#endif